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flag IIT Delhi's new hybrid AC cuts cooling energy use by up to 41.5% using salt-based moisture removal and waste heat regeneration.

flag Researchers at IIT Delhi have developed a hybrid air conditioner that could cut cooling-related electricity use by up to 41.5%, with early tests showing a consistent one-third reduction. flag The system combines traditional cooling with a liquid desiccant using a salt solution to remove moisture from incoming air, reducing the need for energy-intensive overcooling. flag A polymer membrane prevents salt from entering indoor air, while waste heat from the AC’s condenser regenerates the desiccant, eliminating the need for extra heaters. flag The technology, tested in lab conditions and detailed in the Journal of Building Engineering, aims to address India’s rising cooling demand, which could triple by 2037–38, while lowering energy bills and emissions.

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